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Transformer oil base oil and preparation method and applications thereof

A technology of transformer oil and base oil, which is applied in base materials, petroleum industry, and multi-stage serial refining process treatment, etc. It can solve the problems of acid slag polluting the environment, small processing capacity, and high cost, and achieves high yield and good conditions Excellent effect of mild and low temperature performance

Active Publication Date: 2013-01-02
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At first, naphthenic crude oil was used as raw material, and the sulfuric acid-clay refining process was used to produce transformer oil base oil. However, this method has high cost, low yield, small processing capacity, and the most important thing is that a large amount of acid residue is produced to pollute the environment.

Method used

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  • Transformer oil base oil and preparation method and applications thereof
  • Transformer oil base oil and preparation method and applications thereof
  • Transformer oil base oil and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, preparation and performance detection of transformer oil base oil

[0043] 1. Preparation of transformer oil base oil

[0044] The test setting was repeated three times, and the performance test results were the average of three copies of product A.

[0045] 1. Furfural refining

[0046] The SZ36-1 normal second-line distillate oil was refined with furfural, the mass ratio of furfural and SZ36-1 normal second-line distillate oil was 1.8:1, the temperature at the top of the tower was 80°C, and the temperature at the bottom of the tower was 50°C to obtain refined oil.

[0047] The furfural solvent in the refined oil is removed by vacuum distillation, and the conditions of vacuum distillation are: 1kpa, 125°C to obtain the dealdehyde refined oil.

[0048] 2. Add 0.2% (mass percentage) denitrification agent to the denitrified refined oil, denitrify at 80° C. for 45 minutes, separate nitrogen residue, and obtain denitrified refined oil. .

[0049] 3. White ...

Embodiment 2

[0053] Embodiment 2, preparation and performance detection of transformer oil base oil

[0054] 1. Preparation of transformer oil base oil

[0055] The test setting was repeated three times, and the performance test results were the average value of three copies of product B.

[0056] 1. Furfural refining

[0057] The SZ36-1 normal second-line distillate oil was refined with furfural, the mass ratio of furfural and SZ36-1 normal second-line distillate oil was 2.2:1, the temperature at the top of the tower was 90°C, and the temperature at the bottom of the tower was 60°C to obtain refined oil.

[0058] The furfural solvent in the refined oil is removed by a vacuum distillation method, and the conditions of the vacuum distillation are: 0.1kpa, 120° C. to obtain a dealdehyde refined oil.

[0059] 2. Denitrification

[0060] Add 0.1% (mass percentage) denitrification agent to the denitrification refined oil, denitrify at 90° C. for 30 minutes, separate the nitrogen residue, and o...

Embodiment 3

[0065] Embodiment 3, preparation and performance detection of transformer oil base oil

[0066] 1. Preparation of transformer oil base oil

[0067] The test set was repeated three times, and the performance test results were the average value of three copies of product C.

[0068] 1. Furfural refining

[0069] The SZ36-1 normal second-line distillate oil was refined with furfural, the mass ratio of furfural and SZ36-1 normal second-line distillate oil was 1.5:1, the temperature at the top of the tower was 70°C, and the temperature at the bottom of the tower was 40°C to obtain refined oil.

[0070] The furfural solvent in the refined oil is removed by a vacuum distillation method, and the conditions of the vacuum distillation are: 2kpa, 130°C to obtain a dealdehyde refined oil.

[0071] 2. Denitrification

[0072] Add 0.3% (mass percentage) denitrification agent to the de-aldehyde refined oil, denitrify at 70° C. for 60 minutes, separate the nitrogen residue, and obtain the ...

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Abstract

The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method for the base oil of the transformer oil comprises the following steps: 1) performing furfural refining on SZ36-1 common cut 2 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing the furfural; 2) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 3) adding clay to the denitrogenized refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of the domestic transformer oil, can provide brand-new base oil of high-grade No. 45 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transformer oil has wide market application space.

Description

technical field [0001] The invention relates to a transformer oil base oil and a preparation method and application thereof. Background technique [0002] Transformer oil refers to a type of transformer oil used in oil-filled electrical equipment such as transformers, reactors, transformers, bushings, and oil switches for insulation, cooling, and arc extinguishing. There are three requirements for the performance of transformer oil: ① good physical properties; ② good electrical properties; ③ good oxidation stability. [0003] Transformer oil base oil is the raw material for the production of transformer oil. The performance of transformer oil depends to a large extent on the performance of the transformer oil base oil. Usually, paraffin-based transformer oil base oil has a high pour point, is easy to oxidize to generate a large amount of acidic compounds, and has a small content of aromatic hydrocarbons, which has some shortcomings in the life of transformer oil, anti-oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02C10M101/00
Inventor 付玉娥孙元碧商希红于恩强
Owner CHINA NAT OFFSHORE OIL CORP
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